[S390] Get rid of a lot of sparse warnings.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

27 files changed, 121 insertions, 111 deletions

diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index b8c2372..c9da7d1 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -81,7 +81,7 @@ static struct ctl_table appldata_dir_table[] = {
 /*
  * Timer
  */
-DEFINE_PER_CPU(struct vtimer_list, appldata_timer);
+static DEFINE_PER_CPU(struct vtimer_list, appldata_timer);
 static atomic_t appldata_expire_count = ATOMIC_INIT(0);
 
 static DEFINE_SPINLOCK(appldata_timer_lock);
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c
index 8aea369..4ca6157 100644
--- a/arch/s390/appldata/appldata_mem.c
+++ b/arch/s390/appldata/appldata_mem.c
@@ -36,7 +36,7 @@
  * book:
  * http://oss.software.ibm.com/developerworks/opensource/linux390/index.shtml
  */
-struct appldata_mem_data {
+static struct appldata_mem_data {
 	u64 timestamp;
 	u32 sync_count_1;       /* after VM collected the record data, */
 	u32 sync_count_2;	/* sync_count_1 and sync_count_2 should be the
diff --git a/arch/s390/appldata/appldata_net_sum.c b/arch/s390/appldata/appldata_net_sum.c
index 075e619..f64b8c8 100644
--- a/arch/s390/appldata/appldata_net_sum.c
+++ b/arch/s390/appldata/appldata_net_sum.c
@@ -34,7 +34,7 @@
  * book:
  * http://oss.software.ibm.com/developerworks/opensource/linux390/index.shtml
  */
-struct appldata_net_sum_data {
+static struct appldata_net_sum_data {
 	u64 timestamp;
 	u32 sync_count_1;	/* after VM collected the record data, */
 	u32 sync_count_2;	/* sync_count_1 and sync_count_2 should be the
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 15c9eec..3bf9ea4 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -27,9 +27,9 @@
 /* data block size for all key lengths */
 #define AES_BLOCK_SIZE		16
 
-int has_aes_128 = 0;
-int has_aes_192 = 0;
-int has_aes_256 = 0;
+static int has_aes_128 = 0;
+static int has_aes_192 = 0;
+static int has_aes_256 = 0;
 
 struct s390_aes_ctx {
 	u8 iv[AES_BLOCK_SIZE];
diff --git a/arch/s390/crypto/des_check_key.c b/arch/s390/crypto/des_check_key.c
index e3f5c5f..955c441 100644
--- a/arch/s390/crypto/des_check_key.c
+++ b/arch/s390/crypto/des_check_key.c
@@ -30,6 +30,7 @@
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/crypto.h>
+#include "crypto_des.h"
 
 #define ROR(d,c,o)	((d) = (d) >> (c) | (d) << (o))
 
diff --git a/arch/s390/kernel/compat_exec_domain.c b/arch/s390/kernel/compat_exec_domain.c
index 71d27c4..914d494 100644
--- a/arch/s390/kernel/compat_exec_domain.c
+++ b/arch/s390/kernel/compat_exec_domain.c
@@ -12,10 +12,9 @@
 #include <linux/personality.h>
 #include <linux/sched.h>
 
-struct exec_domain s390_exec_domain;
+static struct exec_domain s390_exec_domain;
 
-static int __init
-s390_init (void)
+static int __init s390_init (void)
 {
 	s390_exec_domain.name = "Linux/s390";
 	s390_exec_domain.handler = NULL;
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 5b33f82..cf84d69 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -416,7 +416,7 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
 	mm_segment_t old_fs = get_fs ();
 	
 	set_fs (KERNEL_DS);
-	ret = sys_sysinfo((struct sysinfo __user *) &s);
+	ret = sys_sysinfo((struct sysinfo __force __user *) &s);
 	set_fs (old_fs);
 	err = put_user (s.uptime, &info->uptime);
 	err |= __put_user (s.loads[0], &info->loads[0]);
@@ -445,7 +445,8 @@ asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
 	mm_segment_t old_fs = get_fs ();
 	
 	set_fs (KERNEL_DS);
-	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
+	ret = sys_sched_rr_get_interval(pid,
+					(struct timespec __force __user *) &t);
 	set_fs (old_fs);
 	if (put_compat_timespec(&t, interval))
 		return -EFAULT;
@@ -472,8 +473,8 @@ asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
 	}
 	set_fs (KERNEL_DS);
 	ret = sys_rt_sigprocmask(how,
-				 set ? (sigset_t __user *) &s : NULL,
-				 oset ? (sigset_t __user *) &s : NULL,
+				 set ? (sigset_t __force __user *) &s : NULL,
+				 oset ? (sigset_t __force __user *) &s : NULL,
 				 sigsetsize);
 	set_fs (old_fs);
 	if (ret) return ret;
@@ -499,7 +500,7 @@ asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
 	mm_segment_t old_fs = get_fs();
 		
 	set_fs (KERNEL_DS);
-	ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
+	ret = sys_rt_sigpending((sigset_t __force __user *) &s, sigsetsize);
 	set_fs (old_fs);
 	if (!ret) {
 		switch (_NSIG_WORDS) {
@@ -524,7 +525,7 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
 	if (copy_siginfo_from_user32(&info, uinfo))
 		return -EFAULT;
 	set_fs (KERNEL_DS);
-	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
+	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force __user *) &info);
 	set_fs (old_fs);
 	return ret;
 }
@@ -682,7 +683,7 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offse
 		
 	set_fs(KERNEL_DS);
 	ret = sys_sendfile(out_fd, in_fd,
-			   offset ? (off_t __user *) &of : NULL, count);
+			   offset ? (off_t __force __user *) &of : NULL, count);
 	set_fs(old_fs);
 	
 	if (offset && put_user(of, offset))
@@ -703,7 +704,8 @@ asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
 		
 	set_fs(KERNEL_DS);
 	ret = sys_sendfile64(out_fd, in_fd,
-			     offset ? (loff_t __user *) &lof : NULL, count);
+			     offset ? (loff_t __force __user *) &lof : NULL,
+			     count);
 	set_fs(old_fs);
 	
 	if (offset && put_user(lof, offset))
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 861888a..8d17b2a 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -275,8 +275,8 @@ sys32_sigaltstack(const stack_t32 __user *uss, stack_t32 __user *uoss,
 	}
 
 	set_fs (KERNEL_DS);
-	ret = do_sigaltstack((stack_t __user *) (uss ? &kss : NULL),
-			     (stack_t __user *) (uoss ? &koss : NULL),
+	ret = do_sigaltstack((stack_t __force __user *) (uss ? &kss : NULL),
+			     (stack_t __force __user *) (uoss ? &koss : NULL),
 			     regs->gprs[15]);
 	set_fs (old_fs);
 
@@ -401,7 +401,7 @@ asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs)
 		goto badframe; 
 
 	set_fs (KERNEL_DS);
-	do_sigaltstack((stack_t __user *)&st, NULL, regs->gprs[15]);
+	do_sigaltstack((stack_t __force __user *)&st, NULL, regs->gprs[15]);
 	set_fs (old_fs);
 
 	return regs->gprs[2];
diff --git a/arch/s390/kernel/crash.c b/arch/s390/kernel/crash.c
index 926ccee..8cc7c9f 100644
--- a/arch/s390/kernel/crash.c
+++ b/arch/s390/kernel/crash.c
@@ -9,6 +9,7 @@
 
 #include <linux/threads.h>
 #include <linux/kexec.h>
+#include <linux/reboot.h>
 
 void machine_crash_shutdown(struct pt_regs *regs)
 {
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index bb57bc0..f4b62df 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -120,7 +120,7 @@ struct debug_view debug_hex_ascii_view = {
 	NULL
 };
 
-struct debug_view debug_level_view = {
+static struct debug_view debug_level_view = {
 	"level",
 	&debug_prolog_level_fn,
 	NULL,
@@ -129,7 +129,7 @@ struct debug_view debug_level_view = {
 	NULL
 };
 
-struct debug_view debug_pages_view = {
+static struct debug_view debug_pages_view = {
 	"pages",
 	&debug_prolog_pages_fn,
 	NULL,
@@ -138,7 +138,7 @@ struct debug_view debug_pages_view = {
 	NULL
 };
 
-struct debug_view debug_flush_view = {
+static struct debug_view debug_flush_view = {
         "flush",
         NULL,
         NULL,
@@ -156,14 +156,14 @@ struct debug_view debug_sprintf_view = {
 	NULL
 };
 
-
+/* used by dump analysis tools to determine version of debug feature */
 unsigned int debug_feature_version = __DEBUG_FEATURE_VERSION;
 
 /* static globals */
 
 static debug_info_t *debug_area_first = NULL;
 static debug_info_t *debug_area_last = NULL;
-DECLARE_MUTEX(debug_lock);
+static DECLARE_MUTEX(debug_lock);
 
 static int initialized;
 
@@ -905,7 +905,7 @@ static struct ctl_table s390dbf_dir_table[] = {
 	{ .ctl_name = 0 }
 };
 
-struct ctl_table_header *s390dbf_sysctl_header;
+static struct ctl_table_header *s390dbf_sysctl_header;
 
 void
 debug_stop_all(void)
@@ -1300,8 +1300,7 @@ out:
  * flushes debug areas
  */
  
-void
-debug_flush(debug_info_t* id, int area)
+static void debug_flush(debug_info_t* id, int area)
 {
         unsigned long flags;
         int i,j;
@@ -1511,8 +1510,7 @@ out:
 /*
  * clean up module
  */
-void
-__exit debug_exit(void)
+static void __exit debug_exit(void)
 {
 	debugfs_remove(debug_debugfs_root_entry);
 	unregister_sysctl_table(s390dbf_sysctl_header);
diff --git a/arch/s390/kernel/ebcdic.c b/arch/s390/kernel/ebcdic.c
index bb0f973..cc0dc60 100644
--- a/arch/s390/kernel/ebcdic.c
+++ b/arch/s390/kernel/ebcdic.c
@@ -11,6 +11,7 @@
 
 #include <linux/module.h>
 #include <asm/types.h>
+#include <asm/ebcdic.h>
 
 /*
  * ASCII (IBM PC 437)  -> EBCDIC 037
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 576368c..70db60c 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -365,7 +365,8 @@ void __kprobes kretprobe_trampoline_holder(void)
 /*
  * Called when the probe at kretprobe trampoline is hit
  */
-int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
+static int __kprobes trampoline_probe_handler(struct kprobe *p,
+					      struct pt_regs *regs)
 {
 	struct kretprobe_instance *ri = NULL;
 	struct hlist_head *head, empty_rp;
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index f6d9bcc..52f57af 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -11,6 +11,7 @@
 #include <linux/mm.h>
 #include <linux/kexec.h>
 #include <linux/delay.h>
+#include <linux/reboot.h>
 #include <asm/cio.h>
 #include <asm/setup.h>
 #include <asm/pgtable.h>
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index d989ed4..f5476f5 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -30,6 +30,7 @@
 #include <linux/fs.h>
 #include <linux/string.h>
 #include <linux/kernel.h>
+#include <linux/moduleloader.h>
 
 #if 0
 #define DEBUGP printk
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 8f36504..29fde70 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -86,15 +86,13 @@ FixPerRegisters(struct task_struct *task)
 		per_info->control_regs.bits.storage_alt_space_ctl = 0;
 }
 
-void
-set_single_step(struct task_struct *task)
+static void set_single_step(struct task_struct *task)
 {
 	task->thread.per_info.single_step = 1;
 	FixPerRegisters(task);
 }
 
-void
-clear_single_step(struct task_struct *task)
+static void clear_single_step(struct task_struct *task)
 {
 	task->thread.per_info.single_step = 0;
 	FixPerRegisters(task);
@@ -309,7 +307,7 @@ do_ptrace_normal(struct task_struct *child, long request, long addr, long data)
 		copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
 		if (copied != sizeof(tmp))
 			return -EIO;
-		return put_user(tmp, (unsigned long __user *) data);
+		return put_user(tmp, (unsigned long __force __user *) data);
 
 	case PTRACE_PEEKUSR:
 		/* read the word at location addr in the USER area. */
@@ -331,7 +329,7 @@ do_ptrace_normal(struct task_struct *child, long request, long addr, long data)
 
 	case PTRACE_PEEKUSR_AREA:
 	case PTRACE_POKEUSR_AREA:
-		if (copy_from_user(&parea, (void __user *) addr,
+		if (copy_from_user(&parea, (void __force __user *) addr,
 							sizeof(parea)))
 			return -EFAULT;
 		addr = parea.kernel_addr;
@@ -341,10 +339,11 @@ do_ptrace_normal(struct task_struct *child, long request, long addr, long data)
 			if (request == PTRACE_PEEKUSR_AREA)
 				ret = peek_user(child, addr, data);
 			else {
-				addr_t tmp;
-				if (get_user (tmp, (addr_t __user *) data))
+				addr_t utmp;
+				if (get_user(utmp,
+					     (addr_t __force __user *) data))
 					return -EFAULT;
-				ret = poke_user(child, addr, tmp);
+				ret = poke_user(child, addr, utmp);
 			}
 			if (ret)
 				return ret;
@@ -550,7 +549,7 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data)
 		copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
 		if (copied != sizeof(tmp))
 			return -EIO;
-		return put_user(tmp, (unsigned int __user *) data);
+		return put_user(tmp, (unsigned int __force __user *) data);
 
 	case PTRACE_PEEKUSR:
 		/* read the word at location addr in the USER area. */
@@ -571,7 +570,7 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data)
 
 	case PTRACE_PEEKUSR_AREA:
 	case PTRACE_POKEUSR_AREA:
-		if (copy_from_user(&parea, (void __user *) addr,
+		if (copy_from_user(&parea, (void __force __user *) addr,
 							sizeof(parea)))
 			return -EFAULT;
 		addr = parea.kernel_addr;
@@ -581,10 +580,11 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data)
 			if (request == PTRACE_PEEKUSR_AREA)
 				ret = peek_user_emu31(child, addr, data);
 			else {
-				__u32 tmp;
-				if (get_user (tmp, (__u32 __user *) data))
+				__u32 utmp;
+				if (get_user(utmp,
+					     (__u32 __force __user *) data))
 					return -EFAULT;
-				ret = poke_user_emu31(child, addr, tmp);
+				ret = poke_user_emu31(child, addr, utmp);
 			}
 			if (ret)
 				return ret;
@@ -595,17 +595,19 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data)
 		return 0;
 	case PTRACE_GETEVENTMSG:
 		return put_user((__u32) child->ptrace_message,
-				(unsigned int __user *) data);
+				(unsigned int __force __user *) data);
 	case PTRACE_GETSIGINFO:
 		if (child->last_siginfo == NULL)
 			return -EINVAL;
-		return copy_siginfo_to_user32((compat_siginfo_t __user *) data,
+		return copy_siginfo_to_user32((compat_siginfo_t
+					       __force __user *) data,
 					      child->last_siginfo);
 	case PTRACE_SETSIGINFO:
 		if (child->last_siginfo == NULL)
 			return -EINVAL;
 		return copy_siginfo_from_user32(child->last_siginfo,
-						(compat_siginfo_t __user *) data);
+						(compat_siginfo_t
+						 __force __user *) data);
 	}
 	return ptrace_request(child, request, addr, data);
 }
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 5d8ee3b..1cbf956 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -38,6 +38,7 @@
 #include <linux/device.h>
 #include <linux/notifier.h>
 #include <linux/pfn.h>
+#include <linux/reboot.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -117,7 +118,7 @@ void __devinit cpu_init (void)
  */
 char vmhalt_cmd[128] = "";
 char vmpoff_cmd[128] = "";
-char vmpanic_cmd[128] = "";
+static char vmpanic_cmd[128] = "";
 
 static inline void strncpy_skip_quote(char *dst, char *src, int n)
 {
@@ -275,10 +276,6 @@ static void __init conmode_default(void)
 }
 
 #ifdef CONFIG_SMP
-extern void machine_restart_smp(char *);
-extern void machine_halt_smp(void);
-extern void machine_power_off_smp(void);
-
 void (*_machine_restart)(char *command) = machine_restart_smp;
 void (*_machine_halt)(void) = machine_halt_smp;
 void (*_machine_power_off)(void) = machine_power_off_smp;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index c0cd255..3cb7e10 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -22,23 +22,23 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
-
 #include <linux/mm.h>
 #include <linux/spinlock.h>
 #include <linux/kernel_stat.h>
 #include <linux/smp_lock.h>
-
 #include <linux/delay.h>
 #include <linux/cache.h>
 #include <linux/interrupt.h>
 #include <linux/cpu.h>
-
+#include <linux/timex.h>
+#include <asm/setup.h>
 #include <asm/sigp.h>
 #include <asm/pgalloc.h>
 #include <asm/irq.h>
 #include <asm/s390_ext.h>
 #include <asm/cpcmd.h>
 #include <asm/tlbflush.h>
+#include <asm/timer.h>
 
 extern volatile int __cpu_logical_map[];
 
@@ -53,12 +53,6 @@ cpumask_t cpu_possible_map = CPU_MASK_NONE;
 
 static struct task_struct *current_set[NR_CPUS];
 
-/*
- * Reboot, halt and power_off routines for SMP.
- */
-extern char vmhalt_cmd[];
-extern char vmpoff_cmd[];
-
 static void smp_ext_bitcall(int, ec_bit_sig);
 static void smp_ext_bitcall_others(ec_bit_sig);
 
@@ -298,7 +292,7 @@ void machine_power_off_smp(void)
  * cpus are handled.
  */
 
-void do_ext_call_interrupt(__u16 code)
+static void do_ext_call_interrupt(__u16 code)
 {
         unsigned long bits;
 
@@ -385,7 +379,7 @@ struct ec_creg_mask_parms {
 /*
  * callback for setting/clearing control bits
  */
-void smp_ctl_bit_callback(void *info) {
+static void smp_ctl_bit_callback(void *info) {
 	struct ec_creg_mask_parms *pp = info;
 	unsigned long cregs[16];
 	int i;
@@ -458,9 +452,6 @@ __init smp_count_cpus(void)
 /*
  *      Activate a secondary processor.
  */
-extern void init_cpu_timer(void);
-extern void init_cpu_vtimer(void);
-
 int __devinit start_secondary(void *cpuvoid)
 {
         /* Setup the cpu */
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 6cceed4..5d4a190 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -245,7 +245,7 @@ static struct notifier_block nohz_idle_nb = {
 	.notifier_call = nohz_idle_notify,
 };
 
-void __init nohz_init(void)
+static void __init nohz_init(void)
 {
 	if (register_idle_notifier(&nohz_idle_nb))
 		panic("Couldn't register idle notifier");
@@ -271,8 +271,6 @@ void init_cpu_timer(void)
 	__ctl_load(cr0, 0, 0);
 }
 
-extern void vtime_init(void);
-
 static cycle_t read_tod_clock(void)
 {
 	return get_clock();
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 3cbb0dc..aa0d7ee 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -283,7 +283,7 @@ char *task_show_regs(struct task_struct *task, char *buffer)
 	return buffer;
 }
 
-DEFINE_SPINLOCK(die_lock);
+static DEFINE_SPINLOCK(die_lock);
 
 void die(const char * str, struct pt_regs * regs, long err)
 {
@@ -364,8 +364,7 @@ void __kprobes do_single_step(struct pt_regs *regs)
 		force_sig(SIGTRAP, current);
 }
 
-asmlinkage void
-default_trap_handler(struct pt_regs * regs, long interruption_code)
+static void default_trap_handler(struct pt_regs * regs, long interruption_code)
 {
         if (regs->psw.mask & PSW_MASK_PSTATE) {
 		local_irq_enable();
@@ -376,7 +375,7 @@ default_trap_handler(struct pt_regs * regs, long interruption_code)
 }
 
 #define DO_ERROR_INFO(signr, str, name, sicode, siaddr) \
-asmlinkage void name(struct pt_regs * regs, long interruption_code) \
+static void name(struct pt_regs * regs, long interruption_code) \
 { \
         siginfo_t info; \
         info.si_signo = signr; \
@@ -442,7 +441,7 @@ do_fp_trap(struct pt_regs *regs, void __user *location,
 		"floating point exception", regs, &si);
 }
 
-asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
+static void illegal_op(struct pt_regs * regs, long interruption_code)
 {
 	siginfo_t info;
         __u8 opcode[6];
@@ -585,7 +584,7 @@ DO_ERROR_INFO(SIGILL, "specification exception", specification_exception,
 	      ILL_ILLOPN, get_check_address(regs));
 #endif
 
-asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
+static void data_exception(struct pt_regs * regs, long interruption_code)
 {
 	__u16 __user *location;
 	int signal = 0;
@@ -675,7 +674,7 @@ asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
 	}
 }
 
-asmlinkage void space_switch_exception(struct pt_regs * regs, long int_code)
+static void space_switch_exception(struct pt_regs * regs, long int_code)
 {
         siginfo_t info;
 
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 21baaf5..01f3d29 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -25,7 +25,7 @@
 #include <asm/irq_regs.h>
 
 static ext_int_info_t ext_int_info_timer;
-DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
+static DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
 
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
 /*
diff --git a/arch/s390/lib/uaccess.h b/arch/s390/lib/uaccess.h
new file mode 100644
index 0000000..126011d
--- /dev/null
+++ b/arch/s390/lib/uaccess.h
@@ -0,0 +1,23 @@
+/*
+ *  arch/s390/uaccess.h
+ *
+ *    Copyright IBM Corp. 2007
+ *
+ */
+
+#ifndef __ARCH_S390_LIB_UACCESS_H
+#define __ARCH_S390_LIB_UACCESS_H
+
+extern size_t copy_from_user_std(size_t, const void __user *, void *);
+extern size_t copy_to_user_std(size_t, void __user *, const void *);
+extern size_t strnlen_user_std(size_t, const char __user *);
+extern size_t strncpy_from_user_std(size_t, const char __user *, char *);
+extern int futex_atomic_cmpxchg_std(int __user *, int, int);
+extern int futex_atomic_op_std(int, int __user *, int, int *);
+
+extern size_t copy_from_user_pt(size_t, const void __user *, void *);
+extern size_t copy_to_user_pt(size_t, void __user *, const void *);
+extern int futex_atomic_op_pt(int, int __user *, int, int *);
+extern int futex_atomic_cmpxchg_pt(int __user *, int, int);
+
+#endif /* __ARCH_S390_LIB_UACCESS_H */
diff --git a/arch/s390/lib/uaccess_mvcos.c b/arch/s390/lib/uaccess_mvcos.c
index f9a23d5..78c48f8 100644
--- a/arch/s390/lib/uaccess_mvcos.c
+++ b/arch/s390/lib/uaccess_mvcos.c
@@ -12,6 +12,7 @@
 #include <linux/mm.h>
 #include <asm/uaccess.h>
 #include <asm/futex.h>
+#include "uaccess.h"
 
 #ifndef __s390x__
 #define AHI	"ahi"
@@ -27,10 +28,7 @@
 #define SLR	"slgr"
 #endif
 
-extern size_t copy_from_user_std(size_t, const void __user *, void *);
-extern size_t copy_to_user_std(size_t, void __user *, const void *);
-
-size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
+static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
 {
 	register unsigned long reg0 asm("0") = 0x81UL;
 	unsigned long tmp1, tmp2;
@@ -69,14 +67,14 @@ size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
 	return size;
 }
 
-size_t copy_from_user_mvcos_check(size_t size, const void __user *ptr, void *x)
+static size_t copy_from_user_mvcos_check(size_t size, const void __user *ptr, void *x)
 {
 	if (size <= 256)
 		return copy_from_user_std(size, ptr, x);
 	return copy_from_user_mvcos(size, ptr, x);
 }
 
-size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
+static size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
 {
 	register unsigned long reg0 asm("0") = 0x810000UL;
 	unsigned long tmp1, tmp2;
@@ -105,14 +103,16 @@ size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
 	return size;
 }
 
-size_t copy_to_user_mvcos_check(size_t size, void __user *ptr, const void *x)
+static size_t copy_to_user_mvcos_check(size_t size, void __user *ptr,
+				       const void *x)
 {
 	if (size <= 256)
 		return copy_to_user_std(size, ptr, x);
 	return copy_to_user_mvcos(size, ptr, x);
 }
 
-size_t copy_in_user_mvcos(size_t size, void __user *to, const void __user *from)
+static size_t copy_in_user_mvcos(size_t size, void __user *to,
+				 const void __user *from)
 {
 	register unsigned long reg0 asm("0") = 0x810081UL;
 	unsigned long tmp1, tmp2;
@@ -134,7 +134,7 @@ size_t copy_in_user_mvcos(size_t size, void __user *to, const void __user *from)
 	return size;
 }
 
-size_t clear_user_mvcos(size_t size, void __user *to)
+static size_t clear_user_mvcos(size_t size, void __user *to)
 {
 	register unsigned long reg0 asm("0") = 0x810000UL;
 	unsigned long tmp1, tmp2;
@@ -162,11 +162,6 @@ size_t clear_user_mvcos(size_t size, void __user *to)
 	return size;
 }
 
-extern size_t strnlen_user_std(size_t, const char __user *);
-extern size_t strncpy_from_user_std(size_t, const char __user *, char *);
-extern int futex_atomic_op(int, int __user *, int, int *);
-extern int futex_atomic_cmpxchg(int __user *, int, int);
-
 struct uaccess_ops uaccess_mvcos = {
 	.copy_from_user = copy_from_user_mvcos_check,
 	.copy_from_user_small = copy_from_user_std,
@@ -176,6 +171,6 @@ struct uaccess_ops uaccess_mvcos = {
 	.clear_user = clear_user_mvcos,
 	.strnlen_user = strnlen_user_std,
 	.strncpy_from_user = strncpy_from_user_std,
-	.futex_atomic_op = futex_atomic_op,
-	.futex_atomic_cmpxchg = futex_atomic_cmpxchg,
+	.futex_atomic_op = futex_atomic_op_std,
+	.futex_atomic_cmpxchg = futex_atomic_cmpxchg_std,
 };
diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c
index 49c3e46..24ead55 100644
--- a/arch/s390/lib/uaccess_pt.c
+++ b/arch/s390/lib/uaccess_pt.c
@@ -12,6 +12,7 @@
 #include <linux/mm.h>
 #include <asm/uaccess.h>
 #include <asm/futex.h>
+#include "uaccess.h"
 
 static inline int __handle_fault(struct mm_struct *mm, unsigned long address,
 				 int write_access)
diff --git a/arch/s390/lib/uaccess_std.c b/arch/s390/lib/uaccess_std.c
index 56a0214..28c4500 100644
--- a/arch/s390/lib/uaccess_std.c
+++ b/arch/s390/lib/uaccess_std.c
@@ -13,6 +13,7 @@
 #include <linux/mm.h>
 #include <linux/uaccess.h>
 #include <asm/futex.h>
+#include "uaccess.h"
 
 #ifndef __s390x__
 #define AHI	"ahi"
@@ -28,9 +29,6 @@
 #define SLR	"slgr"
 #endif
 
-extern size_t copy_from_user_pt(size_t n, const void __user *from, void *to);
-extern size_t copy_to_user_pt(size_t n, void __user *to, const void *from);
-
 size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
 {
 	unsigned long tmp1, tmp2;
@@ -72,7 +70,8 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
 	return size;
 }
 
-size_t copy_from_user_std_check(size_t size, const void __user *ptr, void *x)
+static size_t copy_from_user_std_check(size_t size, const void __user *ptr,
+				       void *x)
 {
 	if (size <= 1024)
 		return copy_from_user_std(size, ptr, x);
@@ -110,14 +109,16 @@ size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
 	return size;
 }
 
-size_t copy_to_user_std_check(size_t size, void __user *ptr, const void *x)
+static size_t copy_to_user_std_check(size_t size, void __user *ptr,
+				     const void *x)
 {
 	if (size <= 1024)
 		return copy_to_user_std(size, ptr, x);
 	return copy_to_user_pt(size, ptr, x);
 }
 
-size_t copy_in_user_std(size_t size, void __user *to, const void __user *from)
+static size_t copy_in_user_std(size_t size, void __user *to,
+			       const void __user *from)
 {
 	unsigned long tmp1;
 
@@ -148,7 +149,7 @@ size_t copy_in_user_std(size_t size, void __user *to, const void __user *from)
 	return size;
 }
 
-size_t clear_user_std(size_t size, void __user *to)
+static size_t clear_user_std(size_t size, void __user *to)
 {
 	unsigned long tmp1, tmp2;
 
@@ -254,7 +255,7 @@ size_t strncpy_from_user_std(size_t size, const char __user *src, char *dst)
 		: "0" (-EFAULT), "d" (oparg), "a" (uaddr),		\
 		  "m" (*uaddr) : "cc");
 
-int futex_atomic_op(int op, int __user *uaddr, int oparg, int *old)
+int futex_atomic_op_std(int op, int __user *uaddr, int oparg, int *old)
 {
 	int oldval = 0, newval, ret;
 
@@ -286,7 +287,7 @@ int futex_atomic_op(int op, int __user *uaddr, int oparg, int *old)
 	return ret;
 }
 
-int futex_atomic_cmpxchg(int __user *uaddr, int oldval, int newval)
+int futex_atomic_cmpxchg_std(int __user *uaddr, int oldval, int newval)
 {
 	int ret;
 
@@ -311,6 +312,6 @@ struct uaccess_ops uaccess_std = {
 	.clear_user = clear_user_std,
 	.strnlen_user = strnlen_user_std,
 	.strncpy_from_user = strncpy_from_user_std,
-	.futex_atomic_op = futex_atomic_op,
-	.futex_atomic_cmpxchg = futex_atomic_cmpxchg,
+	.futex_atomic_op = futex_atomic_op_std,
+	.futex_atomic_cmpxchg = futex_atomic_cmpxchg_std,
 };
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index 607f50e..fb87e23 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -414,7 +414,7 @@ cmm_smsg_target(char *from, char *msg)
 }
 #endif
 
-struct ctl_table_header *cmm_sysctl_header;
+static struct ctl_table_header *cmm_sysctl_header;
 
 static int
 cmm_init (void)
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index cd85e34..3382e29 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -52,7 +52,7 @@ extern int sysctl_userprocess_debug;
 extern void die(const char *,struct pt_regs *,long);
 
 #ifdef CONFIG_KPROBES
-ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
+static ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
 int register_page_fault_notifier(struct notifier_block *nb)
 {
 	return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
@@ -452,8 +452,7 @@ void pfault_fini(void)
 		: : "a" (&refbk), "m" (refbk) : "cc");
 }
 
-asmlinkage void
-pfault_interrupt(__u16 error_code)
+static void pfault_interrupt(__u16 error_code)
 {
 	struct task_struct *tsk;
 	__u16 subcode;
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 4bb21be..6315f75 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -25,6 +25,7 @@
 #include <linux/bootmem.h>
 #include <linux/pfn.h>
 #include <linux/poison.h>
+#include <linux/initrd.h>
 
 #include <asm/processor.h>
 #include <asm/system.h>
@@ -107,8 +108,6 @@ static void __init setup_ro_region(void)
 	}
 }
 
-extern void vmem_map_init(void);
-
 /*
  * paging_init() sets up the page tables
  */